Damages caused by the borer‑rot complex to the productivity and quality of sugarcane fertigated with nitrogen doses

Authors

  • Luiz Eduardo da Rocha Pannuti Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Botucatu.
  • Edson Luiz Lopes Baldin Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Botucatu.
  • Glauber José de Castro Gava Agência Paulista de Tecnologia dos Agronegócios, Pólo Centro‑Oeste
  • Oriel Tiago Kölln Centro de Ciência e Tecnologia do Bioetanol, Laboratório Nacional de Ciência e Tecnologia do Bioetanol
  • Juliana Cristina Sodário Cruz Agência Paulista de Tecnologia dos Agronegócios, Pólo Centro‑Oeste

DOI:

https://doi.org/10.1590/S1678-3921.pab2013.v48.13053

Keywords:

Colletotrichum falcatum, Diatraea saccharalis, Saccharum, attractiveness, sugarcane borer, red rot

Abstract

The objective of this work was to evaluate the effect of nitrogen‑fertigation on the damage caused by the borer‑rot complex to the productivity and quality of fertigated sugarcane. The experiment was carried out in field, using a randomized complete block design, with four replicates and five N doses (0, 50 100, 150, and 200 kg ha-1) applied through drip irrigation. The following variables were determined: number of holes caused by Diatraea saccharalis (Lepidoptera: Crambidae); number of internodes infected with red rot; incidence percentage of red rot; stalk productivity; and sugar content. In laboratory, the attractiveness and the consumption of culm fragments by fourth instar caterpillars, in trials with or without choice, were evaluated. Nitrogen fertigation increased the incidence of D. saccharalis and red rot. The number of holes produced by the larvae was correlated with the occurrence of red rot. Sugar percentage reduced with the increase in the number of red rot affected internodes. Nitrogen doses did not affect the attractiveness of sugarcane culm fragments; however, higher N doses increased the consumption of these fragments by D. saccharalis caterpillars. Despite the damages to quality, nitrogen fertilization expressively enhanced the productivity of stalks and sugar.

Author Biographies

Edson Luiz Lopes Baldin, Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, Botucatu.

Juliana Cristina Sodário Cruz, Agência Paulista de Tecnologia dos Agronegócios, Pólo Centro‑Oeste


Published

2013-06-27

How to Cite

Pannuti, L. E. da R., Baldin, E. L. L., Gava, G. J. de C., Kölln, O. T., & Cruz, J. C. S. (2013). Damages caused by the borer‑rot complex to the productivity and quality of sugarcane fertigated with nitrogen doses. Pesquisa Agropecuaria Brasileira, 48(4), 381–387. https://doi.org/10.1590/S1678-3921.pab2013.v48.13053

Issue

Section

CROP SCIENCE